Content marketing agencies McMurry and TMG Custom Media announced today that they have merged to create the nation's largest full-service content marketing agency. The new company, which will be called McMurry/TMG, LLC, will have estimated annual revenues of nearly $100 million, 270 employees, and offices in New York City; Washington, D.C.; Phoenix; and Saratoga Springs, N.Y., according to a company statement.

The merger is being overseen by private equity firm The Wicks Group of Companies, which is taking a majority stake in the combined company. No additional financial terms were disclosed.

The new agency will provide a wide range of content marketing services, including content strategy, content creation, content distribution, and campaign analytics. Both companies were founded in the 1980s, and their current clients include a variety of businesses and nonprofits in such fields as healthcare, education, financial services, travel and hospitality, e-commerce, and luxury goods.

"Marketers are harnessing content's ability to reach and engage key constituencies in a measurable way across a spectrum of online and offline platforms—from magazines and other content platforms to every type of digital, video, mobile, search, and social media experience," said Matt Petersen, TMG Custom Media's former president, who has been named the combined company's CEO, in a statement. "The combined capabilities of these two long-time leaders in the field will be a compelling proposition to existing and potential clients."

Based in Arizona, McMurry has a roster that includes various Fortune 500 companies and consumer brands, such as Chase, Deloitte, Disney, Kaiser Permanente, Mercedes-Benz, Microsoft, and UPS. TMG is based in Washington, D.C., and serves major corporations, trade associations, healthcare organizations, nonprofits, and educational institutions. McMurry/TMG's headquarters will be in New York City. The new headquarters are expected to be completed in mid-2013.

Chris McMurry, former CEO of McMurry, and Jane Ottenberg and Richard Creighton , founders of TMG, will retain a minority interest in the combined company.